{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:24.072833", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2016-May-25_to_2016-May-27_49.5_24.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2016050000654}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 25 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 59273.32732308999}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 24.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 49.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 48.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.46, 24.0], [48.25, 24.5], [48.35, 24.75], [48.25, 25.0], [48.47, 25.53], [48.82, 25.68], [48.97, 26.03], [49.5, 26.25], [50.03, 26.03], [50.18, 25.68], [50.25, 25.65], [50.5, 25.75], [51.03, 25.53], [51.25, 25.0], [51.15, 24.75], [51.25, 24.5], [51.15, 24.25], [51.18, 24.18], [51.53, 24.03], [51.75, 23.5], [51.53, 22.97], [51.18, 22.82], [51.03, 22.47], [50.5, 22.25], [50.25, 22.35], [50.0, 22.25], [49.75, 22.35], [49.5, 22.25], [49.25, 22.35], [49.0, 22.25], [48.47, 22.47], [48.25, 23.0], [48.35, 23.25], [48.25, 23.5], [48.46, 24.0]]]]}, "2016-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.46, 24.0], [48.25, 24.5], [48.35, 24.75], [48.25, 25.0], [48.47, 25.53], [48.82, 25.68], [48.97, 26.03], [49.5, 26.25], [50.03, 26.03], [50.18, 25.68], [50.25, 25.65], [50.5, 25.75], [51.03, 25.53], [51.25, 25.0], [51.15, 24.75], [51.25, 24.5], [51.15, 24.25], [51.18, 24.18], [51.53, 24.03], [51.75, 23.5], [51.53, 22.97], [51.18, 22.82], [51.03, 22.47], [50.5, 22.25], [50.25, 22.35], [50.0, 22.25], [49.75, 22.35], [49.5, 22.25], [49.25, 22.35], [49.0, 22.25], [48.47, 22.47], [48.25, 23.0], [48.35, 23.25], [48.25, 23.5], [48.46, 24.0]]]]}, "2016-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.46, 24.0], [48.25, 24.5], [48.35, 24.75], [48.25, 25.0], [48.47, 25.53], [48.82, 25.68], [48.97, 26.03], [49.5, 26.25], [50.03, 26.03], [50.18, 25.68], [50.25, 25.65], [50.5, 25.75], [51.03, 25.53], [51.25, 25.0], [51.15, 24.75], [51.25, 24.5], [51.15, 24.25], [51.18, 24.18], [51.53, 24.03], [51.75, 23.5], [51.53, 22.97], [51.18, 22.82], [51.03, 22.47], [50.5, 22.25], [50.25, 22.35], [50.0, 22.25], [49.75, 22.35], [49.5, 22.25], [49.25, 22.35], [49.0, 22.25], [48.47, 22.47], [48.25, 23.0], [48.35, 23.25], [48.25, 23.5], [48.46, 24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.69073940448402}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3923142481342543}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.51634093457608, 30.60931677628207, 32.217655476062305]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.287177729388816, 29.73544271650536, 31.390885674522906]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.177593871282121, -4.234614199476688, -2.7647346736439538]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.9788246638204328, -4.69073940448402, -3.174006002886813]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7158681823362818, -2.3022795339947697, -1.546299317284026]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.05779296574647, -2.52713596636143, -1.8194548098448229]}}